公开(公告)号：US20220268369A1

公开(公告)日：2022-08-25

申请号：US17672579

申请日：2022-02-15

申请人： CKD CORPORATION

发明人： Shinji ITOH ,  Shotaro HATANAKA ,  Yasunari AZUMA ,  Yasunari ISHIHARA

IPC分类号： F16K27/06 ,  F16K31/06

摘要： A solenoid unit of an electromagnetic valve includes a coil, a bobbin, a fixed iron core, a movable iron core, an urging spring, a magnetic frame, and a molded plastic part. The magnetic frame includes a frame end wall, two frame arms, and an internal thread hole, to which the fixed iron core is threaded. A tubular projection protrudes from an end face of the frame end wall that is on a side opposite to the bobbin. The projection forms part of the internal thread hole. The molded plastic part includes a molded end wall, which covers the frame end wall, and a molded peripheral wall. The molded end wall includes a connecting hole that is continuous with the internal thread hole. The connecting hole includes a groove in an inner circumferential surface. The groove extends along an outer circumferential surface of the projection.